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The aluminum I autoionization doublet in the quiet solar spectrumObservations are presented of the Al I autoionization doublet 1932 A and 1936 A in the quiet solar spectrum, obtained from the NRL slit spectrograph aboard Skylab and from the University of Hawaii Echelle Rocket Spectrograph. The observed profiles are compared with theoretical spectra computed for the Harvard Smithsonian Reference Atmosphere and the Vernazza, Avrett and Loeser (1976) solar models. It is found that nonlocal thermodynamic equilibrium effects are important in the line-formation problem and the synthetic spectra are in good agreeement with the data.
Document ID
19810061758
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Heasley, J. N.
(Hawaii Univ. Honolulu, HI, United States)
Roussel-Dupre, D.
(Hawaii Univ. Honolulu, HI, United States)
Mcallister, H. C.
(Hawaii Univ. Honolulu, HI, United States)
Beerman, C.
(Hawaii, University Honolulu, HI, United States)
Date Acquired
August 11, 2013
Publication Date
August 15, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Solar Physics
Accession Number
81A46162
Funding Number(s)
CONTRACT_GRANT: NAS8-33219
CONTRACT_GRANT: NSG-7536
Distribution Limits
Public
Copyright
Other

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